A physical experiment with solar energy. One of our most interesting articles, it is fascinating due to its great size 3 x 1 m and clearly illustrates the effect of the warmth of the sun. The tube is filled with some air, both ends are tied closed and then as in a short time the monster begins to rise. This is due to the expansion of the air in the tube due to the absorption of the sun's rays by the black body of the tube.

Contents:

• black plastic tube 3 x 1 m,


• 50m Nylon thread as tether and


• instructions.

From 6 years - with an adult - a physical teaching and learning object to the theme solar energy.